Saw-table for curved work.



No. 822,330- PATENTED JUNE 5, 1906. B. WILSON. SAW TABLE FOR GURVBDWORK.

APPLICATION FILED AUG. 11, 1905.

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BENTON WILSON, OF CAMBRIDGE CITY, INDIANA.

SAW-TABLE FOR CURVED WORK.

Specification of Letters Patent.

l. atented June 5, 1906.

Application fil d August 11, 1905. Serial No. 273,726.

clare the following to be a full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same when taken inconnection with the accompanying drawings, forming a part thereof.

The object of this invention is to improve saw-tables for curved work,securing therein the highest attainable degree of efliciency andsimplicity and especially adapting it tov the accurate sawing ofirregular forms, such as folding-chair legs and the like, withoutespecial care on the part of the attendant except in the matter ofdelivery at a predetermined point.

To this end the said invention consists in the construction andcombination of parts hereinafter more particularly set forth andclaimed.

Figure 1 is a plan view of the face of the permanent or stationarytable, showing the track and guides located thereon. Fig. 2 is a planview of the face of the movable carriage. Fig. 3 shows a cross-sectionof the carriage, taken on the line X X of Fig. 2. Fig. 4 is across-section of the table, taken on the line Y Y of Fig. 1. Fig. 5 is aplan view of the assembled parts in operative position, showing the twoextreme positions of the carriage and Fig. 6 is a side elevation of theparts shown in Fig. 5.

Similar indices refer to and denote like parts throughout the severalviews of the drawings.

With all of the above-named views in mind I will now take up the detaildescription of my invention,'which I will do as briefly and compactly asI may.

The stationary tabZe. The letter A denotes the body of the table proper,which has a perfectly level top, reinforced by the cleats 1 and 2extending thereacross on the under side thereof, being secured by screwsor otherwise, substantially as indicated. In one end of the table A is abody-aperture a, cut out, whereby that end portion of the table maypartially inclose the body of the operator.

The indice a denotes the aperture through Which the saw 3 operates atright angles to With each other and are identical in size.-

Said track extends along on the left-hand portion of the table, from thenear end thereof to near the far end thereof, the far portion beingcurved somewhat to the right, as shown in Fig. 1. Also secured on theface of the table A is the double track D D, the rails of which arespaced slightly apart parallel with each other and are identical insize. Said track extends from a point near to, to the left of, andtoward the near end of the table from the aperture a, lying a shortdistance parallel with the slot a, and then extending in the desiredcurve to the far right-hand corner of the table, as shown in Fig. 1.Secured to the face of the table A, between the two tracks abovementioned, is the cleat C, and also secured to the face of the table A,to the right of the track D D and the slot at, is the cleat E. The facesof said tracks and cleats should be perfectly smooth and should all beon a common level an equal distance above the face of the table A.Secured on the face of the righthand edge of the table A, near thelongitudinal center thereof, is the lug or stop 4, and similar thereto,but located on the left-hand edge of the face of the table, but nearerthe far end thereof, is the lug or stop 5. The purposes of said stopswill presently be explained.

The carriage.The carriage is about half as long as the table abovedescribed and slightly narrower and consists of the body portion H,which is a flat member having a smooth lower face adapted to rest on andslide over the faces of the tracks and cleats of the table. A portion ofthe right-hand side of the body H is cut away in a curve from near thenear end of the carriage through to the opposite end, as shown in Fig.2, forming the aperture h at the side of the carriage, and in theopposite or left-hand edge of the body is the notch 7t. Extending fromthe end of the body H, from near the right-hand forward corner to nearthe far end thereof, is the slot h, Which islocated on an ascertainedcurve corresponding to the predetermined curvature into which theproduct should be formed, the aforesaid tracks B B and D D having alsothe same curvature. The body H is reinforced by a permanent cleat 6,extending across the far end, with its right-hand end extendin beyond tothe right, as shown, and, further, by the detachable cleat 7, whichextends across the slot h and supports the partially-detached portion ofthe body H, near the near end of which said cleat 7 is located, asshown.

Secured in the body of the carriage and extending therethrough, withtheir points proj ecting below the under face thereof, are the twopintles I and J, their location of neces sity being accuratelypredetermined, the lower point of the former being located to operatebetween the rails of the track D D and of the latter between the railsof the track B B when the carriage is moved backward and forward. Thelocation of said pintles must be mathematically determined in order togive the proper movements to the carriage without interference when inoperation.

The numerals 8 and 9 denote the two lugs, against which the material tobe operated on is placed. Said material is to be laid on the surface ofthe carriage and extends over theslot 71/ when the carriage is drawnforward by the operator.

The numeral 10 denotes a handle whereby the operator may control themovements of the carriage forward and backward.

Operation: As before intimated, the table shown in Fig. 1 may be securedon the ordinary table of a band-saw machine by clamps or otherwise,bringing the table to position by allowing the saw 3 to pass through theslot 0/ and being finally located in the aperture a, as shown. After thetable is secured in position the carriage-is placed thereon, the cleat 7being then turned aside to allow the saw 3 to enter through the slot hand then being replaced, as in Fig. 2-. The points of the pintles I andJ are entered between the rails of the respective tracks D D and B B,with the under side of the carriage resting on the faces of the saidtracks and the cleats C and E, as shown in Figs. 5 and 6. It will now beapparent that by grasping the handle 10 the operator may move thecarriage forward and backward at pleasure. The movements of the carriagetoward the operator is limited by the right-hand end of the cleat 6engaging the stop 4, at which time the carriage, will assume thelocationshown in solid lines in Figs. 5 and 6. A piece of material (notshown) may now be laid on the carriage with one of its edges engagingthe lugs 8 and 9 and overlapping the slot 77/. Then the operator hasonly to gently push the carriage from him, when it will travel to theposition shown by the dotted lines thereof, as shown in Fig. 5, havingbeen guided in its movement by said tracks, and thus causing the saw tocut the material from end to end and giving it the Having now fullyshown and described my' invention and the preferred manner for itsconstruction, what I claim, and desire to secure by Letters Patent ofthe United States, 1s

1. In mechanism for curve-sawing the combination of a carriage havingpintles I J With a relatively fixed table, having two parallel,

double tracks receiving the said pintles, and a saw working up throughsaid table and'carriage, the curvature of said tracks correspond ing tothat of the outline to be cut on the article, and the said carriage andtable being further provided with a stop and lateral notched partadapted to engage each other for limiting the movement of the carriagein one direction substantially as set forth.

2. In mechanism for curve-sawing, the combination of a carriage havingtransverse cleats 6 and 7, curved slot h, pintles I J in combinationwith arelatively fixed table having raised longitudinal cleats C D, twocurved parallel double tracks receiving said pintles, stops 4 and 5 anda saw-opening and a saw working through said sawopening and said curvedslot, the curvature of said slot and said tracks corresponding to thatrequired for the article and the stops 4 and 5 being arranged forengagement respectively with cleat 6 and notched part h of the tablesubstantially as set forth.

3. In combination with a relatively fixed table and a feed-tablecarriage movable over the top thereof and notched at one side, a i

saw working through slots in these two parts, means for guiding themovement of the carriage in the desired curvilinear lines and arelatively fixed stop arranged to engage the notched part of saidcarriage and limit its movement in one direction substantially as setforth.

In testimony whereunto I have signed my name to this specification inthe presence of 7 two subscribing witnesses.

BENTON WILSON Witnesses:

H. H. BRYAM, R. W. RANDLE.

